Cognac
Cognac is a cognac of France at 40% ABV, used in 6 drinks on this site.

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A bottle of Hennessy V.S. Cognac beside a small glass of the amber spirit, against a plain white background
Composition
USDA FoodData Central (Survey (FNDDS)) · 2710699. USDA's Survey (FNDDS) record for brandy gives 231 kcal/100 g with no carbohydrate, sugar or fat, and 33.4 g alcohol per 100 g but no usable liquid density to turn that into an ABV, so the strength here is stated from Cognac's legal minimum bottling proof of 40% rather than derived from the record. Public domain. No measured liquid density is published anywhere in this record; the density-classes.json 'spirit-40' class is taken as the nearest fit and marked estimated.
Used in these drinks
most firstSubstitutes
Bourbon: Grain rather than grape, and drier. A drink built on cognac's fruit and oak reads leaner and more spirit-forward with bourbon in its place.
A general substitute is a browsing aid rather than a drink-specific claim. Where a particular drink has a substitution worth making, it says so on its own page and recomputes the spec for it.